Overview
The DAC7612U/2K5, produced by Texas Instruments, is a dual, 12-bit digital-to-analog converter (DAC) designed for high performance and low power consumption. It features guaranteed 12-bit monotonicity over the industrial temperature range of –40°C to +85°C. The device includes a serial-to-parallel shift register, DAC registers, laser-trimmed 12-bit DACs, an on-board reference, and rail-to-rail output amplifiers. Each output settles to 1 LSB within 7µs and consumes only 3.7mW. The synchronous serial interface supports up to a 20MHz clock and is compatible with various DSPs and microcontrollers.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 12 | Bits | ||
| Relative Accuracy | –2 | ±1/2 | +2 | LSB |
| Differential Nonlinearity | –1 | ±1/2 | +1 | LSB |
| Zero-Scale Error | –1 | +3 | LSB | |
| Full-Scale Voltage | 4.079 | 4.095 | 4.111 | V |
| Settling Time | 7 | µs | ||
| Supply Voltage | 4.75 | 5.0 | 5.25 | V |
| Power Dissipation | 3.5 | 7.5 | mW | |
| Operating Temperature Range | –40 | +85 | °C | |
| Package Type | SOIC-8 |
Key Features
- Low Power Consumption: 3.7mW
- Fast Settling Time: 7µs to 1 LSB
- Precision Output: 1mV LSB with a 4.095V full-scale range
- On-Board Reference: Complete with a 2.435V reference
- High Linearity and Monotonicity: Guaranteed 12-bit linearity and monotonicity over the industrial temperature range
- High-Speed Interface: 3-wire interface with up to 20MHz clock
- Compact Package: 8-lead SOIC package
Applications
- Process Control: Suitable for industrial process control systems
- Data Acquisition Systems: Ideal for data acquisition and measurement systems
- Closed-Loop Servo-Control: Used in servo-control applications requiring precision and speed
- PC Peripherals: Applicable in various PC peripheral devices
- Portable Instrumentation: Suitable for portable instrumentation due to its low power consumption and compact size
Q & A
- What is the resolution of the DAC7612U/2K5?
The DAC7612U/2K5 has a resolution of 12 bits. - What is the typical settling time of the DAC7612U/2K5?
The typical settling time is 7µs to 1 LSB. - What is the full-scale voltage range of the DAC7612U/2K5?
The full-scale voltage range is 0V to 4.095V. - What is the power consumption of the DAC7612U/2K5?
The power consumption is 3.7mW. - What is the operating temperature range of the DAC7612U/2K5?
The operating temperature range is –40°C to +85°C. - What type of package is the DAC7612U/2K5 available in?
The DAC7612U/2K5 is available in an 8-lead SOIC package. - Is the DAC7612U/2K5 compatible with various microcontrollers and DSPs?
Yes, it has a synchronous serial interface compatible with a wide variety of DSPs and microcontrollers. - What is the clock speed of the serial interface?
The serial interface supports up to a 20MHz clock. - Does the DAC7612U/2K5 have an on-board reference?
Yes, it comes complete with a 2.435V on-board reference. - How does the LOADDACS pin function in the DAC7612U/2K5?
The LOADDACS pin is used to transfer data from the serial shift register to the DAC registers, making the DAC registers transparent during this transition.
